Typewriting machine



Feb. 19, 1929. 1,702,420

A. w. SMITH TYPEWRI TI NG MACHINE Filed March 5, 1923 R a 2\ ggg sis:

a: *2 Q E E: 1W S w :HOLIH a? WITNESSES INVENTEIFR Hi5 ATTUHNEY PatentedFeb. 19, 1929.

UNITED STATES PATENT OFFICE.

ARTHUR W. SMITH, OF NEW YORK, N. Y., ASSIGNOR TO REMINGTON TYPEWRI'IERCOMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPEWRITING MACHINE.

Application filed March 5, 1923. Serial No. 622,715.

My invention relates to typewriting machines and more particularly towork registering mechanism of such machines.

The invention is intended to accomplish some of the same results as theconstruction disclosed in the patent to Clio B. Yaw, No. 1,012,785,dated Dec. 26, 1911.

One of the objects of the present invention is to provide a constructionof the character described which may be readily applied as an attachmentto the improved or more modern form of the No. and also to the No. 12Remington typewriting machines without modifying the structural featuresof said machines as they now exist.

To the above and other ends which will hereinafter appear, my inventionconsists in the features of construction, arrangements of parts andcombinations of devices set forth in the following description andparticularly pointed out in the appended claims.

In the accompanying drawings wherein like reference characters indicatecorresponding parts in the different views,

Figure 1 is a front elevation with parts in section of the countingmechanism together with some of the associated parts of the Rem in gentypewriter common to the more mode: style of No. 10 and also to the No.12 Remington machines; the section being taken on the line 1-1 of Figure2 and looking in the direction of the arrow at said line.

Figure 2 is a top plan view of the same.

have only shown so much of the typewi'iting machine as is necessary toarrive at understanding of my invention in its embodiment therein. Itwill be understood, however, that the parts of the typewriter shown withwhich the features of my in vcntion are associated are common to themore modern style of No. 10 and also to the Trio. 12 Remington machines.

The power-driven carriage (not shown) s 5. feed. rack 1, and mounted totravel transversely over a top plate 2 of the machine under control ofthe usual escapement mechanism. In said machines the escapement 7.chaniszn includes an escapement wheel 3 and a loose dog i and a holdingdog 5, said dogs coacting with the wheel in the usual manner sy anactuation of any printing key ace key to afford an intermittent letfeedof the carriage.- In said we:

chines the escapement wheel is fixed on a shaft 6 supported in hearingsin a detachably supported bracket 7 that includes yokeshaped supportingarms 7*. The forward end 8 of the shaft 6 is supported in a bearingopening in the forward supporting arm of the bracket, whereas the rearend of the shaft receives a bearing in a sleeve 9 clamped in itsadjusted position by a split bearing in the rear arm 7 a of the bracket.The escapement wheel is secured to its shaft 6 by screws 10 and 11 thatengage at their threaded ends in a flange 12 fixed on the shaft 6. Thefeed rack 1 engages a feed pinion 13 which is fixed on the forward endof the sleeve 14 which receives its support on the shaft 6. Thi sleeveis mounted to turn freely on the shaft and carries at its rear end anintegral cup shaped member 15. The circular flange portion of thismember 15 has slots out there through to provide internal ratchet teeth16 as well as external teeth. A pawl 17 is pivoted at 18 on the flange12 and coacts with the teeth 16 to cause the escapementwheel to turnwith the sleeve 14 and the feed pinion 13 when the escapement wheel isreleased by the feed dogs for letter space movement. This enables thecarriage to move from right to left or in the letter feed direction, asindicated by the arrow in Fig. 2. However. when the carriage isreturned. or is moved from left to right, the feed pinion 13 and sleeve14 will turn independently of the escapement wheel, since the pawl 17acts in but one direction to connect said escapement wheel to turn withthe feed pinion. The foregoing features of the t-ypewriting machine areof the usual construction but are explained in detail in order that abetter understanding of the counting mechanism actuated from theescapement wheel may be arrived at.

The counting mechanism. and the means by which motion is transmitted toit from the escapement wheel, are mounted as an en tirety on a sheetmetal bracket comprising a base plate 19 and an upstanding plate 20projecting therefrom. The usual construction of the typewriting machineincludes a spring drum supporting bracket 21 secured by screws 22 to thetop plate of the machine. I prefer in attaching the counter to themachine tr; dace the scr w. ir'dirititilgv em:

ployed to secure the bracket 21 in place by the special screws 22 shown.These special screws are tapped to receive screws 23 by which thebracket l920 is detachably secured in place on the top plate 2 of themachine. It will be observed that this bracket 192O extends transverselyof the machine to one side of the es apement wheel and its shaft. Anordinary Vceder stroke counter 24 is secured in place on the base 19 ofthe bracket by one of the screws 23 and by a screw The counter isactuated by the usual oscillating crank arm 26 connected to the rockshaft 27 of the counter, and is limited in its oscillating movements inopposite directions by suitable stops comprising stop arms 28 fastenedto the shaft 27 and coacting with fixed stops 29 below the stop arms 28,and with corresponding stops (not shown) above the stop arms. In acounter of this character a. full stroke of the crank arm 26 in onedirection sets up one unit on one of the reg ister wheels 30, whereas areturn movement of the crank arm is ineffective on the register.

Motion is transmitted to the crank arm 26 from the escapement wheel bythe following means:

A screw corresg ionding'to the usual screw is replaced by longer headedscrew 11, which in addition to connecting the escapement wheel to itsshaftconstitutes a pin offset from the of the escapement wheel so as toact as a cam, wiper or actuating device, as will presently appear. Aslide or reciprocatory actuating member 31 has a laterally extendingheaded pin 32,- the stem of which is received in a horizontally disposedguide slot 33 in the right-hand edge of the bracketplate 20. One side 0;the slide 3]. rests against the bracket plate 20, whereas the head ofthe pin 32 bears against the opposite face of said plate 20, thussupporting and guiding the slide on the bracket against movement foreand aft of the machine. It will be seen that the width of the slot 33 isslightly greater than the diameter of the stem of the pin. 32 so as toafford a slight up and down movement of the slide at this point,purposes which will hereinafter appear. The slide 31 is tormed'with ahorizontally disposed slot 34: therein, open at one end. This slotreceives the bearing sleeve 9 of the escapement wheel shaft 6. The slideis thus supported near one end by the sleeve 9 for longitudinalreciprocating m'o tion and also to receive a very slight up and downpivotal motion around said as a center. Two flanges or contacts 35 and36'project forwardly from the slide 31 on opposite sides of the pin 11and on opposite sices of the axis of the escapeinent wheel. The rand endof the ice 31 is termed with hook-like pawl 37 adapted to engage theteeth of a ratchet wheel 38. This wheel turns on a pivot 39 by which thewheel is mounted on the front "face of the bracket plate 20. A link 40is pivoted at one end, as at 4:1, to the ratchet wheel and at its otherend, as at 4:2, to the arm 26 of the counter. A light spring l3 issecured at one end to the base plate 19 of the bracket by a screw 44,whereas the free end portion of the spring is bent rearwardly at rightangles to its length, as indicated at 45. This bent end portion of thespring extends beneath and bears with alight pressure upwardly on theleft-hand end port-ion of the slide 31 and projec'ts through an uprightslot e6 in the bracket plate 20 tothe rear side there he extreme end 47of the spring is again bent at right angles to the portion thereof toprevent the spring from moving forwardly out ot the slot 46. Theupwardly directed force of the spring maintains the pawl 37 inengagement with the teeth'o'fthe ratchet wheel 38.

In order to prevent an accidental backward movement ofthe ratchet wheelI have pro vided a pawl 48 pivoted at 4:9 on the bracket plate 20, theengaging nose of said pawl being held by gravity in engagement with theteeth oil the ratchet wheel.

In the operation of the machine, a return movement of the carriage willturn the pinion 13 in a. clockwise direction the parts are viewed fromthe front of the macln This motion turns the sleeve 14- and the nember15 without transmitting motion to the escapement wheel or t partscontrolled thereby. Duringafree travel of the carri e c in the directionof its feed. as when tabulating or moving-the carriage by hand, the teedrack 1 is released from the feed pinion so that no motion'istransn'iitted to the cscapemcnt wheel. It is only when the feed dogs areactuated by aprinting key or b space key that motion is transmitted tothe cscapemcnt wheel and to the counter controlled thereby. At this timethe escapemcnt heel travels in the direction of the arrow in Fig. 1 andin revolving carries the pin ll against one or the other of the contacts35 or 36 and operating with camming action thereon moves the slidelongitudinally in first one direction and then the other, reciprocatingthe slide forward and back transversely of the machine. The movement ofthe slide in one direction steps the ratchet wheel thedistancc of onetooth and it requires a complete revolution of the esc'apement wheel tohi it about this single tooth movement or" the chet wheel. During themovement ot the slide in the opposite direction the pawl 37 slides overthe teeth of the ratchet wheel a distance slightly more than one toothand-engages the next advancing tooth on the ratchet wheel. The

motion thus intermittently transmitted from the escapement wheel to theratchet wheel is in turn transmitted through the link 40 to the arm 2%?of the counter. A complete movement of the arm in one direction up oneunit on the counter. whereas the return movement Of the arm din mg thesecond half of the revolution of the ratchet wheel 38 has no effect onthe counter but merely restores the arm 26 in position to begin anothereffective stroke.

In the present instance there are fitteen teeth on the cscapement wheel,representing fifteen strokes of the keys for each revolution of thewheel. Qi: en ratchet teeth are provided. in the pre ent instance on theratchet wheel. it ther fore requires sixteen revolutions of thepementwheel, or two hundred and forty suokes oi the keys, to make acomplete revolution oi the ratchet wheel and to set up one'unit on thecounter. Each unit therefore represents two to one system of payi eotfor piece-work, two hundred and forty strokes on the keys is the unit bywhich the operator is paid. Hence the parts are, in the presentinstance, constructed and arranged to indicate in accordance with suchsystem. Obviously, however, the intermediate connections between theescapement wheel and the counter may be varied at will to cause aregistration on the counter once for a greater or less number of keystrokes. A simple method of making such a change is to substitute forthe ratchet wheel 38 one having a ditl erent number of teeth.

t will be understood that the power of the usual spring drum moves thecarriage transmits motion to the escapement wheel and to the countercontrolled thereby, so that none of the resistance due to actuating thecounter is exerted against the operator in actuating the keys. It willbe seen moreover, that the resistance to be over come in actuating the side 31 and the parts controlled thereby to operate the counter is butslight, adding but little resistance to the spring drum which may beeasily and effectively employed to actuate the counter. Such slight dragas may be exerted againstthe drum is but momentary in the presentconstruction, and is only exerted during the action of the pin 11 on oneor the other of the contacts 35 and 36. The pin at other times travelstree of both contacts and the slide and the parts controlled thereby,such parts ofl'ering no resistance .vhatever such times to the treetraveling movement of the escapement wheel, or to the travel. of thecarriage.

in the modern forms of the Nos. l0 and Remington machines, as well as tothe No. 12 machine, not only does the yoke-like bracket arms 7 extend inthe rear of the escapement wheel and shaft, but the tabuator framecontaining five or more upight tahulator levers 51 are also arranged 11"i in the rear of the escapement wheel int. it will be seen thereforethat there is no room at such point to make connection with means fortransmitting motion from the escapement wheel shaft to the counter as inthe construction disclosed in the Yaw patent hereinbefore referred to.However, by my invention the counter and its actuating mechanism may bereadily connected as a single unit, and in the nature of an attachment,to any of such machines without modifying the structural featuresthereof as they now exist, except by the substitution of screws 11 and22 of the character shown herein. for other screws commonly employed atthe corresponding points.

The present construction has all of the additional advantages of the Yawconstruction in that the register cannot be fraudulently run up by theoperator, as many other counters of the prior art can be. Thus, it willbe seen that by the present invention the counter can only be actuatedby the finger strokes on the keys and that it would require much work torun up the register without writing as would be required to produce acorresponding amount of work or Written matter.

While I have referred with considerable detail to the use of myinvention in the more modern styles of Remington typewrit-ing machines,and while the devices of my invention have been devised more especiallyfor embodiment in such machines, it should be understood that theinvention is not restricted to use in such machines, but may be employedin various styles of typewriting machines.

hat I claim as new and desire to secure by Letters Patent is 1. Thecombination with a carriage, and an escapement wheel of a typewritingmachine that is turned only during the movement of the carriage in aletter-teed direction, of: a reciprocatory pawl actuated there by oncefor a given plurality of letter space movements of the carriage undercontrol of said wheel, a counter, and transmitting means controlled bysaid pawl for setting up a unit on said counter for a plurality ofreciprocating movements of; said pawl.

2. The combination with a carriage, and an escapement wheel of atypewriting machine that is turned only during the movement of thecarriage in a lettenteed direction, of a reciprocatory pawl actuatedthereby once for a given plurality of letter space movements of thecarriage under control of said wheel, a ratchet wheel. intermittentlyactuated by said pawl, a counter, and means controlled by said ratchetwheel for actuating said counter once for a plurality of intermittentactuations of the ratchet wheel.

The combination with the escapement wheel of a typewriting machine, of areciprocatory actuating member controlled thereby and given a completeforward and hack movement for each revolution of the escapement wheel, apawl carried by said reciprocatory member, a ratchet wheelintermittently actuated by said pawl, a counter having an oscillatorycrank arm, and a link connecting said crank arm and ratchet wheel.

4;. In a typewriting machine having an escapement wheel, an actua.'.. ,5pin oliset from the axisthercof, a reciprocatory actuating slide havingcontacts on opposite sides of the axis of the escapemcnt wheel and withwhich pin coacts to intermittently reciprocate the slide, counter, andmeans controlled by said slide for actuating said counter.

The combination with the escapement wheel of a typewriting machinehaving an actuating pin offset from the axis thereof, of a reciprocatoryactuating slide having contacts on opposite of the axis of the escapement wheel and with which said pin coacts to ermittently reciprocatethe slide, a pawl carried by said slide, a ratchet wheel actuated bysaid pawl, a counter, and, means controlled by said ratchet wheel foractuating said count-er.

6. The combination of the escapement wheel for a power driven carriage;a shaft for said wheel; a bracket extending in the rear of said shaftfor supporting the rear end thereof; a counter; and intermediateoperative connections between said escapement wheel and counter foractuating the latter by said wheel, said connections including areciprocatory slide actuated by said Wheel and extending transversely ofits axis and forward of that portion of the bracket which supports therear end of said shaft, a pawl carried by said slide, a ratchet wheelwith which said pawl coacts, an oscillatory arm for actuating thecounter, and means controlled by said ratchet wheel for intermittentlyoscillating said arm.

7. The combination of an escapcment wheel having an actuating camconnected therewith, a pawl provided with two taced parallel flangesbetween which'said cam is arranged, a ratchet wheel adapted to beactuated by said pawl, and a link attached at one end said ratchet wheeland at its other end to an arm connected to a counter.

8. The combination of an escapement wheel luwing an eccentric pin, aslide having a slot to embrace the axle of said escapement Wheel andhaving also two parallel spaced flanges adapted to be acted upon by saidpin whereby said slide is adapted to be moved back and forth once onlyduring one complete revolution of said escapement wheel, a ratchet wheeladapted to be engaged by a tooth on said slide whereby said ratchetwheel is turned only one tooth space distance during one completerevolution of the escapement wheel. and one back and forthreciprocation. of the slide, a counter, and means :lior ac tuating saidcounter comprising a link pivotally attached to one end to said ratchetwheel and at its other end to an arm on said counter.

9. In a typewriting machine, escapement mechanism, a camming deviceoperated by said mechanism, and a register and reciprocating drivingconnections therefor, which, as unit, are detachably secured to themachine, so that, when in position upon the machine, the drivingconnections are in the path of the camming device, to be engaged andactuated thereby, upon operation of the escapement mechanism.

10. In a typewriting machine, a main frame; escapement mechanism; acamming device rotating upon operation of said escapen'ient mechanism;and a bracket, a re ris ter, and driving means for the register,1neluding a ratchet-wheel, a pawl-carrying arm for driving theratchet-wheel, and means for imparting motion to said pawl-carrying arm,which, as a unit, are detachably secured upon the rear of said mainframe, so that, when in position thereupon, said motion-imparting meansoccupies a position to be actuated by the camming device and therebytransmits motion to the register to cause the same to opcrate.

11. In a typewriting machine, a main frame, escapement mechanism, acamming device operated by said mechanism, a bracket detcchably securedto the rear of the main frame, a register mounted upon the bracket andreciprocating connections associated with the bracket and, actuated bythe camming device to impart motion to the register for operating thesame.

12. In a typewriting machine, a main frame, escapement mechanism, acamming device rotating upon operation of said es capement mechanism, abracket secured to the main frame, a register mounted upon the bracket,and means upon said bracket arranged to transpose the rotary motion ofsaid camming device into reciprocating motion and thereby operate theregister.

13. In a typewriting machine, a main .rame, escapement mechanism, acamming device rotating upon operation of said escapcment mechanism, abracket detachably secured at the rear of said main frame, a registermounted upon the bracket, and means for effecting a step-by-stepmovement of the register, including a ratchet-wheel, a

pawl-carrying arm for driving the ratchet wheel, and means actuated bysaid camming device for driving said pawl-carrying arm.

1%. In a typewriting machine, a carria eescapement mechanism including arevoluhle cam, a bracket detachably mountable on the frame of themachine, a register fixed to the bracket, and driving connections forthe register, including an arm rocked by said cam whereby to operate theregister,

In a typewriting machine; a car iii escapement mechanism including anescape- Inent Wheel; a counter; and driving connections intermediatesaid escapement Wheel and counter including a ratchet- Wheel, areciprocatozi'y pawl for actuating said ratchet Wheel, a pawl coactingwith said ratchet wheel for preventing a rotation thereof in onedirection, means controlled by said escapenient Wheel for reciprocatingsaid pawl, and means for actuating said counter from 10 said. ratchetWheel.

Signed at the borough of Manhattan, city of New York, in the county ofNew York, and State of New York, this 2d day of March, A. D. 1923.

ARTHUR W. SMITH.

